<?php 
        if($_POST["submit"] == "submit"){
           # $data = [ "apple" => 4, "banana" => 2, "orange" => 3, "pear" => 1];
           # echo json_encode($data);
            $userName= $_POST["userName"];
            $password=$_POST["password"];

            $ip = "localhost"; // 数据库服务器地址
            $user = "root";     // 数据库用户名
            $pwd = "root";     // 数据库密码
            $db = "test";     // 数据库名称
            // 创建连接
            $conn = mysqli_connect($ip, $user, $pwd, $db);
            // 检查连接
            if (!$conn) {
                die("连接失败: " .mysqli_connect_error());
            }
            echo "连接成功";
            
            # 预处理语句
            $stmt = $conn -> prepare(" INSERT INTO test (name, password) VALUES (?, ?) ");
            if ($stmt === false) {
                 die("预处理语句失败: " . $conn->error);
             }
         
             # 绑定参数
            $stmt->bind_param("ss", $name, $password); // "ss" 表示两个字符串参数
         
            // 执行语句
             if ($stmt -> execute()) {
                 echo "新记录插入成功";
             } else {
                 echo "错误:" . $stmt->error;
             }
         
             // 关闭预处理语句
             $stmt->close();
             // 关闭连接
             $conn->close();
        }
        else{
            echo "abc";
        }
?>